Deconex

Last updated on RxList: 12/15/2016
Deconex Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 12/21/2016

Deconex (guaifenesin, phenylephrine hydrochloride capsule) is a combination of an expectorant and a nasal decongestant indicated to temporarily relieve the following symptoms due to the common cold, hay fever (allergic rhinitis), or other upper respiratory allergies: helps loosen phlegm (mucus) and thin bronchial secretions to drain bronchial tubes and make coughs more productive, relieves nasal congestion, and reduces swelling of nasal passages. Deconex is available over-the-counter (OTC). Common side effects of Deconex include:

  • dizziness,
  • headache,
  • nausea,
  • trouble sleeping,
  • nervousness,
  • excitability, or
  • weakness.

The dose of Deconex for adults and children 12 years of age and over is 1 capsule every 4 hours, not to exceed 6 capsules in 24 hours. Deconex may interact with monoamine oxidase inhibitors (MAOIs). Tell your doctor all medications and supplements you use. Tell your doctor if you are pregnant or plan to become pregnant before using Deconex. Consult your doctor before breastfeeding.

Our Deconex (guaifenesin, phenylephrine hydrochloride capsule) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

SLIDESHOW

Natural Remedies for Cold and Flu See Slideshow
Deconex Consumer Information

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using guaifenesin and phenylephrine and call your doctor at once if you have:

  • fast, pounding, or uneven heartbeat; or
  • severe anxiety or nervousness.

Common side effects may include:

  • dry mouth, nose, or throat;
  • upset stomach, loss of appetite, vomiting;
  • feeling excited or restless (especially in children);
  • sleep problems (insomnia); or
  • headache, dizziness.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Deconex (Guaifenesin, Phenylephrine Hydrochloride)

QUESTION

The common cold is one of the most common illnesses in the world. See Answer
Deconex Professional Information

SIDE EFFECTS

No information provided. Please see the WARNINGS AND PRECAUTIONS sections

Read the entire FDA prescribing information for Deconex (Guaifenesin, Phenylephrine Hydrochloride)

© Deconex Patient Information is supplied by Cerner Multum, Inc. and Deconex Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

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